S-90281A093 1/4"-20 x 4 1/2" DIN 939 Setup Studs

Key Features & Benefits at a Glance

• Exceptional Durability: Black-oxide steel construction with Rockwell C22 hardness ensures long-lasting performance in demanding industrial environments.
• High Tensile Strength: 125,000 psi minimum tensile strength provides reliable load-bearing capacity for heavy-duty applications.
• Precision Threading: Class 2A thread fit on both ends guarantees consistent, secure fastening with minimal play.
• Versatile Double-Ended Design: Threaded on both ends (1/4"-20) enables flexible installation in various tooling and machining setups.
• Corrosion Resistance: Black-oxide surface treatment offers enhanced protection against rust and wear in workshop conditions.
• Standardized Compatibility: DIN 939 compliance ensures interchangeability and reliable performance in European machinery and fixtures.
• Environmental Compliance: Meets RoHS 3 and REACH regulations, making it suitable for regulated industrial sectors.

Professional Applications & Engineering Value

This Black-Oxide Steel Setup Stud is engineered to address critical challenges in precision machining and industrial tooling. The double-ended threading with Class 2A fit allows for secure, repeatable setups in jigs, fixtures, and CNC applications, reducing alignment errors and downtime. The high 125,000 psi tensile strength and Rockwell C22 hardness ensure it withstands intense clamping forces and vibrational stresses without deformation. The black-oxide finish provides an added layer of corrosion resistance, extending service life in humid or coolant-exposed environments. Compliant with DIN 939 standards, it guarantees dimensional consistency for international machinery, making it ideal for manufacturers requiring reliable, high-precision components that maintain tolerance under continuous use.

Specification Summary & Compliance

This setup stud features a 4 1/2" length with 1" thread length on each end, threaded to 1/4"-20 with Class 2A thread fit for precise engagement. It meets DIN 939 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from restricted substances and safe for industrial use across regulated markets.